1291 Isabella marries Florenz of Hainault.
1297 Death of Florenz and end of last prosperous period of the principality. The suzerainty of Achaia has been transferred to Philip of Tarentum.
1301 Isabella marries Philip of Savoy.
1304 Isabella and Philip leave Greece in consequence of disputes with their vassals and with Philip of Tarentum.
1311 Death of Isabella in Italy. Her daughter Maud of Hainault, widow of Guy II of Athens, succeeds.
1313 Maud marries Louis of Burgundy.
1315 Maud and Louis leave for Greece. Ferdinand of Majorca claims principality and sets out to take it.
1316 Death of Ferdinand in battle with Louis.
1317 Death of Louis. The house of Anjou try to marry Maud to Count John of Gravina, but finds she has already married Hugh de la Pallisse. King of Naples declares this marriage null, and Maud is compelled to go through ceremony with John. She is then imprisoned and dies about 1324. Philip of Tarentum takes title of prince.